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1988 GMC GMT-400 prices in the U.S.
$15,500
Median asking price
17 active listings · Updated October 3, 2026
National price overview
Typical asking price range
$12,995 – $36,799 All 17 listings · Middle 50% of asking pricesMedian asking price
$15,500Trim, mileage and condition change what a comparable vehicle costs.
As of October 3, 2026, the median asking price for a 1988 GMC GMT-400 in the U.S. is $15,500, based on 17 active dealer listings tracked by VinAssessment.
Behind the price
Price range & market sample
The median asking price for a 1988 GMC GMT-400 in the U.S. is $15,500 based on 17 active listings.
17 active dealer listings
Snapshot October 3, 2026 · refreshed daily
30-day asking price change: +$7,499.
Typical: $12,995–$36,799 — the middle half of 17 asking prices
Median $15,500
$7,995 low
$120K high
Why the wide range? Price depends mostly on configuration and mileage — see below. This spread covers the middle 96% of asking prices: we exclude the cheapest and priciest 2% to reduce the influence of extreme values. This does not verify title status or guarantee that every erroneous listing is excluded.
$15,500
Pre-owned median (17)
91,587
Average mileage
Live 1988 GMC GMT-400 listings, priced by VIN
Compared with all listings
All-listings median $15,500
Price differences are not deal ratings. Compare equipment, mileage and vehicle history before judging a price.
Every VIN links to a full market report: decode, active listings and the local price band.
Trim-level pricing isn't reliable enough for this model yet — mileage and configuration explain most of the spread above.
Understand the differences
1988 GMC GMT-400: VIN configurations and specifications
Multiple VIN patterns can share the same trim. Compare their recorded equipment, then open a specification page for the full details.
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C1500 5L 8-cyl VIN pattern: 2GTDC14H · year code J20 VINs in our database Observed VINs, not production totals
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Trim not specified 5.7L 8-cyl · 4WD VIN pattern: 1GTFK24K · year code J32 VINs in our database Observed VINs, not production totals
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C1500 4.3L 6-cyl VIN pattern: 1GTDC14Z · year code J23 VINs in our database Observed VINs, not production totals
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C1500 5.7L 8-cyl VIN pattern: 1GTDC14K · year code J$37,800 Median asking price · U.S. 5 priced listings · September 27, 2026
Where these specifications come from
Specifications combine decoded VIN data, including NHTSA vPIC , with inventory records. If decoding does not identify a trim, a recorded inventory trim may be shown. VIN patterns do not confirm every installed option.
Counts describe observed VINs in our database, not factory production totals. Prices are median asking prices from qualifying U.S. listings, not original MSRP. Check the vehicle’s build sheet for exact equipment.
FACTORY REFERENCE
1988 GMC GMT-400 factory brochure
Model-year reference for features and equipment. Actual VIN equipment may differ.
No verified factory brochure is currently listed for this exact model year.
Need equipment for a specific vehicle? Look up its factory window sticker →
Price trend
View national price trend · all trims
Average price is up $10,945 since July 5.
Average asking price (USD) · national · all trims. Hover, tap or focus a point for its date and price.
Chart scale: $16,575–$36,305. On narrow screens, scroll the chart sideways to see the full period.
Daily average price table
| Date | Average asking price (USD) |
|---|---|
| October 3, 2026 | $32,842 |
| October 2, 2026 | $34,395 |
| October 1, 2026 | $34,270 |
| September 30, 2026 | $34,270 |
| September 29, 2026 | $28,555 |
| September 28, 2026 | $31,458 |
| September 27, 2026 | $25,555 |
| September 26, 2026 | $25,281 |
| September 25, 2026 | $25,281 |
| September 24, 2026 | $24,323 |
| September 23, 2026 | $23,287 |
| September 22, 2026 | $23,287 |
| September 21, 2026 | $23,287 |
| September 20, 2026 | $23,287 |
| September 19, 2026 | $23,287 |
| September 18, 2026 | $23,287 |
| September 17, 2026 | $23,633 |
| September 16, 2026 | $23,633 |
| September 15, 2026 | $23,633 |
| September 14, 2026 | $23,633 |
| September 13, 2026 | $23,979 |
| September 12, 2026 | $23,979 |
| September 11, 2026 | $23,994 |
| September 10, 2026 | $24,186 |
| September 9, 2026 | $24,186 |
| September 8, 2026 | $24,186 |
| September 7, 2026 | $25,550 |
| September 6, 2026 | $24,221 |
| September 5, 2026 | $24,237 |
| September 4, 2026 | $25,343 |
| September 3, 2026 | $25,343 |
| September 2, 2026 | $26,675 |
| September 1, 2026 | $25,343 |
| August 31, 2026 | $26,343 |
| August 30, 2026 | $24,826 |
| August 29, 2026 | $24,181 |
| August 28, 2026 | $25,584 |
| August 27, 2026 | $27,289 |
| August 26, 2026 | $26,053 |
| August 25, 2026 | $26,018 |
| August 24, 2026 | $26,018 |
| August 23, 2026 | $27,289 |
| August 22, 2026 | $26,018 |
| August 21, 2026 | $26,018 |
| August 20, 2026 | $26,018 |
| August 19, 2026 | $27,289 |
| August 18, 2026 | $26,018 |
| August 17, 2026 | $27,289 |
| August 16, 2026 | $21,128 |
| August 15, 2026 | $25,888 |
| August 14, 2026 | $25,888 |
| August 13, 2026 | $27,352 |
| August 12, 2026 | $26,198 |
| August 11, 2026 | $26,261 |
| August 10, 2026 | $28,239 |
| August 9, 2026 | $28,239 |
| August 8, 2026 | $28,239 |
| August 7, 2026 | $26,716 |
| August 6, 2026 | $26,716 |
| August 5, 2026 | $28,239 |
| August 4, 2026 | $22,539 |
| August 3, 2026 | $22,539 |
| August 2, 2026 | $22,539 |
| August 1, 2026 | $20,674 |
| July 31, 2026 | $20,674 |
| July 30, 2026 | $25,798 |
| July 29, 2026 | $26,715 |
| July 28, 2026 | $22,539 |
| July 27, 2026 | $22,798 |
| July 26, 2026 | $24,630 |
| July 25, 2026 | $20,297 |
| July 24, 2026 | $19,164 |
| July 23, 2026 | $20,568 |
| July 22, 2026 | $21,496 |
| July 21, 2026 | $21,496 |
| July 20, 2026 | $18,983 |
| July 19, 2026 | $18,485 |
| July 18, 2026 | $19,841 |
| July 17, 2026 | $19,841 |
| July 16, 2026 | $19,841 |
| July 15, 2026 | $23,997 |
| July 14, 2026 | $24,197 |
| July 13, 2026 | $24,197 |
| July 12, 2026 | $24,197 |
| July 11, 2026 | $21,830 |
| July 10, 2026 | $21,830 |
| July 9, 2026 | $21,897 |
| July 8, 2026 | $21,897 |
| July 7, 2026 | $24,278 |
| July 6, 2026 | $21,897 |
| July 5, 2026 | $21,897 |
What would a 1988 GMC GMT-400 cost per month?
Estimate the monthly payment on a $15,500 vehicle. Move the numbers to match your own loan.
10% down
7.0% is an illustrative starting rate — use your own lender quote.
Loan term
Estimated monthly payment
$276
per month
60 months · 7.0% APR · $1,550 down
Amount financed
$13,950
Total interest
$2,610
Estimate only. Excludes tax, title, registration and dealer fees, and assumes a fixed-rate loan with equal monthly payments. Your actual rate depends on your credit and lender.
Before you buy
A few important steps can help you buy with confidence.
- Check title and accident history
- Arrange an independent inspection
- Review factory equipment
- Check recalls by VIN
Frequently asked questions
Why do 1988 GMC GMT-400 prices range from $7,995 to $120,000?
The spread comes down to configuration and mileage: higher-mileage, base-configuration examples sit near the low end, while low-mileage and premium configurations reach the top. Half of all listings fall between $12,995 and $36,799 — see the mileage and trim breakdowns above for where a specific vehicle lands.
Is $32,842 a good price for a 1988 GMC GMT-400?
$32,842 is the market average as of October 3, 2026. The $15,500 median is a comparison point, not a deal rating. Compare the same trim and mileage band, and check condition, equipment and vehicle history.
How many 1988 GMC GMT-400 are for sale right now?
17 in total, nearly all pre-owned. Counts refresh daily from live dealer inventory.
Is this the trade-in value or private-party value of my 1988 GMC GMT-400?
These figures describe dealer asking prices, not trade-in offers, private-party sale values or completed sale prices. Use them to compare advertised vehicles. To find out what a buyer or dealer would pay for your car, request an offer that takes its mileage, condition, equipment and history into account.
How we calculate these prices
We track 17 active listings for this vehicle across dealer sites nationwide, updated every day. Average and median are computed from real asking prices on live listings. We exclude the top and bottom 2% of prices to reduce the influence of extreme values. This does not verify title status or guarantee that every erroneous listing is excluded. Prices reflect dealer asking prices — not final sale prices — and exclude taxes, fees, and incentives. Trim and mileage move the price more than any other factor; see the breakdowns above.
Want the original factory equipment and MSRP behind a specific car? Look up the original Monroney sticker for a 1988 GMC →
Own a 1988 GMC GMT-400? See what it's worth →
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